style.css

html, body {
    width: 100%;
    height:100%;
}

body {
    background: linear-gradient(-20deg, #161c26, #3d4757, #6f7378);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}


textarea {
    resize: none;
    outline: none !important;
    box-shadow: 0 0 20px #719ECE;
    font-size: 12px;
}

p {
    position: fixed;
    bottom: 0;
}

#shadowtext {
    color: #a5b7bb;
    text-shadow: 2px 2px #616161;
}

button {
    background: linear-gradient(-20deg, #3d4757, #6f7378);
    border: none;
    color: #a5b7bb;
    text-shadow: 2px 2px #616161;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 0 20px #719ECE;
    font-size: 17.5px;
}