style.css

@font-face {
    font-family: "Iosevka";
    src: url("iosevka-regular.ttf") format("truetype");
    font-display: swap;
}
html {
    font-size: min(calc(100vw / 42), calc(100vh / 50));
    height: 100%;
}
body {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin: 0;
    overflow: hidden;
    font-family: "Iosevka", monospace;
    font-size: 80%;
    height: 100%;
}
#sliders {
    width: 32rem;
    height: 32rem;
    transform: scale(calc(2110 / 2000));
    position: relative;
}
#slider-container {
    width: 32rem;
    height: 32rem;
    position: relative;
}
#formula:focus {
    outline: none;
}
textarea {
    font-family: "Iosevka", monospace;
    font-size: 100%;
    width: 32rem;
    height: 2rem;
    min-height: 2rem;
    box-sizing: border-box;
    resize: none;
    overflow: hidden;

    border: none;
    /*border: solid 0.5px #b2b2b2;*/

    background: #efefef;
    //color: white;
    border-radius: 0.3rem;

    margin-top: 0.5rem;
    padding: 0.5rem;

    transition: background 0.1s;
}
#comment {
    margin-bottom: 0.2rem;
}
#txi,
#comment {
    cursor: default;
}
#code {
    width: 32rem;
    margin-bottom: 1rem;
    position: relative;
}
#formula:hover {
    background: #e5e5e5;
}
.error {
    background: #efcece !important;
}
#examples-left,
#examples-right {
    z-index: 1;
    cursor: pointer;
    position: absolute;
    top: 14.5rem;
    font-size: 1.2rem;
    width: 3rem;
    height: 3rem;
    text-align: center;
    line-height: 3rem;
    transition-property: right, left;
    transition-duration: 0.2s;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
#examples-left {
    left: -3rem;
}
#examples-left:hover {
    left: -3.5rem;
}
#examples-right {
    right: -3.5rem;
    background: #0075ff;
    color: white;
    border-radius: 0.3rem;
}
#examples-right:hover {
    right: -4rem;
    background: #0065ef;
}
#credits {
    margin-top: 1rem;
}
a {
    color: black;
}
#record {
    background: #e5e5e5;
    border-radius: 0.3rem;
    padding: 0.1rem 0.3rem;
    cursor: pointer;
}
#record:hover {
    background: #c7381c;
    color: white;
}