style.css

@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk&display=swap');

body,
html {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #0e1012;
    text-align: center;
    font-family: 'Hanken Grotesk', sans-serif;
}

.prototype {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 100vw;
    margin-bottom: 30px;
}

.prototype label {
    font-size: 1.25rem;
    color: #818CF8;
    font-weight: 400;
    position: relative;
    top: 0.5rem;
    margin: 0 0 0 7px;
    padding: 0 3px;
    background: #0e1012;
    width: fit-content;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.prototype input {
    color: #fafffd;
    padding: 11px 10px;
    font-size: 1.5rem;
    width: 400px;
    max-width: 80vw;
    border: 2px #19213A solid;
    border-radius: 5px;
    background: #0e1012;
}

.prototype input[type="file"],
.prototype input::placeholder {
    color: #93999e;
}

.prototype input[type="file"].uploaded {
    color: #fafffd;
}

.prototype input:focus {
    outline: solid 2px #818CF8;
}

::-webkit-file-upload-button {
    padding: 6px 12px;
    gap: 8px;
    height: 50px;
    width: max-content;
    border: none;
    background: #4168de33;
    border-radius: 10px;
    cursor: pointer;
    justify-content: center;
    margin: 0 auto;
    color: #818CF8;
    margin-right: 4px;
}

.button {
    display: flex;
    align-items: center;
    font-weight: inherit;
    padding: 12px 24px;
    gap: 8px;
    height: 70px;
    width: max-content;
    white-space: nowrap;
    text-overflow: ellipsis;
    border: none;
    background: #4168de33;
    border-radius: 10px;
    cursor: pointer;
    justify-content: center;
    margin: 0 auto;
}

.button:focus {
    outline: solid 2px #818CF8;
}

.btnlabel {
    margin-left: 10px;
    line-height: 20px;
    font-size: 1.5rem;
    color: #818CF8;
    font-family: sans-serif;
    letter-spacing: 1px;
}

.button:hover {
    background: #4168de33;
}

.button:hover svg {
    animation: spin 2s linear infinite;
}

.downloading {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}