Page Comparison

body {
    background: lightgrey;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#keyboard {
    left: 2.8rem;
    right: 2.8rem;
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.keyboard__button--close {
    display: block;
    position: absolute;
    z-index: 9999;
    top: 2rem;
    left: 2rem;
    width: 4rem;
    height: 4rem;
}

.keyboard__row, .keyboard__row--numerical {
    display: flex;
}

.keyboard__button {
    font-size: 1.5rem;
    height: 3.5rem;
    min-width: fit-content;
    width: 3.5rem;
    margin: 0.25rem;
    border-radius: 0.1em;
    background: white;
    color: black;
    font-family: Arial, Helvetica, sans-serif;
}

.keyboard__button--space:active {
    widthbackground-color: 30vw#ddd;
   } 
.keyboard__button--enter {transition: background-color 0s;
    widthanimation: fadeEffect 70.25vw2s;
}

.keyboard__button--toggle {

@keyframes fadeEffect {
    0% {
      widthopacity: 7.25vw1;
}    }
    100% {
      opacity: 0.6;
    }
}

.keyboard__button--backspace {
    width: 7vw30vw;
}

.keyboard__button--shiftenter {
    width: 5vw7.25vw;
}

.keyboard__button--toggle {
    :not(inputwidth: 7.25vw;
}

.keyboard__button--back {
    width: 7vw;
}

.keyboard__button--shift {
    width: 5vw;
}

:not(input):not(textarea),
:not(input):not(textarea)::after,
:not(input):not(textarea)::before {
    -webkit-user-select: none;
    user-select: none;
    cursor: default;
}
input, button, textarea, :focus {
    outline: none;
}

/*720p horiz*/
@media only screen and (min-height: 216px) and (max-height: 216px) {
    #keyboard {
        margin-top: 1rem;
    }
    .keyboard__button {
        font-size: 1rem;
        height: 2.5rem;
        min-width: fit-content;
        width: 2.5rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 1.4rem;
        margin: 1%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 5vw;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 3.5vw;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 2vw;
    }

    .keyboard__button--space {
        width: 20vw;
    }
    .keyboard__button--enter {
        width: 5vw;
    }
    .keyboard__button--toggle {
        width: 5vw;
    }
    .keyboard__button--back {
        width: 5vw;
    }
    .keyboard__button--shift {
        width: 3.5vw;
    }
}

/*720p vert*/
@media only screen and (min-height: 384px) and (max-height: 384px) {
    #keyboard {
        margin-top: 4rem;
    }
    .keyboard__button {
        font-size: 1.7rem;
        height: 3rem;
        min-width: fit-content;
        width: 3rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 2.2rem;
        margin: 2%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 5rem;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 4rem;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 2.5rem;
    }

    .keyboard__button--space {
        width: 25rem;
    }
    .keyboard__button--space--numerical {
        width: 6rem;
    }
    .keyboard__button--enter {
        width: 8.5rem;
    }
    .keyboard__button--toggle {
        width: 8.5rem;
    }
    .keyboard__button--back {
        width: 6rem;
    }
    .keyboard__button--shift {
        width: 5rem;
    }
}

/*1080p horiz*/
@media only screen and (min-height: 324px) and (max-height: 324px) {
    #keyboard {
        margin-top: 2.5rem;
    }
    .keyboard__button {
        font-size: 1.5rem;
        height: 3rem;
        min-width: fit-content;
        width: 3rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 1.8rem;
        margin: 2%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 7.5vw;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 5vw;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 3.5vw;
    }

    .keyboard__button--space {
        width: 30vw;
    }
    .keyboard__button--enter {
        width: 7.25vw;
    }
    .keyboard__button--toggle {
        width: 7.25vw;
    }
    .keyboard__button--back {
        width: 7vw;
    }
    .keyboard__button--shift {
        width: 5vw;
    }
}

/*1080p vert*/
@media only screen and (min-height: 576px) and (max-height: 576px) {
    #keyboard {
        margin-top: 8rem;
    }
    .keyboard__button {
        font-size: 2.5rem;
        height: 5rem;
        min-width: fit-content;
        width: 5rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 2.8rem;
        margin: 2%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 7.5rem;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 5.5rem;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 4rem;
    }

    .keyboard__button--space {
        width: 30rem;
    }
    .keyboard__button--space--numerical {
        width: 8rem;
    }
    .keyboard__button--enter {
        width: 11.25rem;
    }
    .keyboard__button--toggle {
        width: 11.25rem;
    }
    .keyboard__button--back {
        width: 8rem;
    }
    .keyboard__button--shift {
        width: 7rem;
    }
}

/*4k horiz*/
@media only screen and (min-height: 648px) and (max-height: 648px){
    #keyboard {
        margin-top: 5rem;
    }
    .keyboard__button {
        font-size: 3.5rem;
        height: 7rem;
        min-width: fit-content;
        width: 7rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 3.8rem;
        margin: 2%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 16rem;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 5.5rem;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 4rem;
    }

    .keyboard__button--space {
        width: 50rem;
    }
    .keyboard__button--space--numerical {
        width: 25rem;
    }
    .keyboard__button--enter {
        width: 11.25rem;
    }
    .keyboard__button--toggle {
        width: 11.25rem;
    }
    .keyboard__button--back {
        width: 10rem;
    }
    .keyboard__button--shift {
        width: 8rem;
    }
}

/*4k vert*/
@media only screen and (min-height: 1152px) and (max-height: 1152px) {
    #keyboard {
        margin-top: 17rem;
    }
    .keyboard__button {
        font-size: 4rem;
        height: 10rem;
        min-width: fit-content;
        width: 10rem;
        margin: 0.5%;
        border-radius: 0.1em;
        background: white;
        color: black;
        font-family: Arial, Helvetica, sans-serif;
    }

    .keyboard__row--numerical > .keyboard_button--numerical {
        font-size: 3.8rem;
        margin: 2%;
    }

    .keyboard__row--numerical > .keyboard__button--space--numerical {
        width: 26rem;
    }

    .keyboard__row--numerical > .keyboard__button--enter--numerical {
        width: 7rem;
    }

    .keyboard__row--numerical > .keyboard__button--back--numerical {
        width: 6.5rem;
    }

    .keyboard__button--space {
        width: 80rem;
    }
    .keyboard__button--space--numerical {
        width: 40rem;
    }
    .keyboard__button--enter {
        width: 14.25rem;
    }
    .keyboard__button--toggle {
        width: 14.25rem;
    }
    .keyboard__button--back {
        width: 13rem;
    }
    .keyboard__button--shift {
        width: 11rem;
    }
}