Разработка Создаем красивую страницу с анимированным фоном

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0 10%;
    color: #fff;
    background-color: #000;
    background: linear-gradient(to bottom right, #142621, #262133, #1c2933);
    font: 1.25rem/1.5 'Roboto', sans-serif;
}

.wrapper {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.75);
    overflow: hidden;
}

h1, h2 {
    margin: 0;
    color: #bea6ff;
    background: linear-gradient(to right, #7ef2cf, #bea6ff, #8ccdff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.25;
}

h1 {
    font-size: 3rem;
    text-transform: uppercase;
}

h1::after {
    content: '';
    display: block;
    height: 2px;
    margin-top: 20px;
    background: linear-gradient(to right, #7ef2cf, #bea6ff, #8ccdff);
}

h2 {
    margin-top: 40px;
    font-size: 1.5rem;
}

canvas {
    position: fixed;
    top: 0;
    left: 0;
}

#bg1 {
    z-index: -1;
    filter: blur(1px);
}

#bg2 {
    z-index: -2;
    filter: blur(10px);
}

@media screen and (min-width: 500px) {
    h1 {
        font-size: 4rem;
    }
    h2 {
        font-size: 2rem;
    }
}