index.css

@font-face {
    font-family: Arist;
    src: url("./static/aristotelica/Aristotelica Display DemiBold Trial.ttf");
}

:root {
    --black: #252525;
    --white: #D0D0D0;
}

html {
    font-family: Arist, Roboto, Arial, Helvetica, sans-serif;
    background-color: var(--black);
    font-size: 2vw;
    color: var(--white);
}

body {
    display: flex;
    justify-content: center;
    height: 100vh;
    background: #252525;
    background: linear-gradient(180deg, #252525 0%, #252525 80%, #ff5e00 180%);
    overflow: hidden;
    margin: 0;
}

img {
    width: 40vw;
    margin-bottom: 1em;
    margin-top: 5em;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
}

.diamond {
    width: 382px;
    height: 382px;
    background: #232323;
    background: linear-gradient(-45deg, #3233347f 0%, #32333400 100%);
    transform: rotate(45deg);
    overflow: hidden;
  }

.diamond:before {
    background: #ffffff3f;
    content: "";
    filter: blur(20px);
    height: 140%;
    left: -30%;
    position: absolute;
    width: 25px;
    opacity: .1;
    animation: light 10s infinite ease-in;
}

.diamond {
    width: 382px;
    height: 382px;
    background: #232323;
    background: linear-gradient(-45deg, #3233347f 0%, #32333400 100%);
    transform: rotate(45deg);
    overflow: hidden;
  }

.diamond:before {
    background: #ffffff3f;
    box-shadow: 0 0 10px 10px #ffffff;
    filter: blur(20px);
    height: 140%;
    left: -30%;
    position: absolute;
    width: 25px;
    transition: all .8s;
    opacity: .1;
    animation: light 10s infinite ease-in;
}

.background {
    position: absolute;
    display: flex;
    top: 7em;
    z-index: 0
}

@media only screen and (orientation: portrait){
    h1 {
        font-size: 7vw;
    }

    img {
        width: 75vw;
        margin-bottom: 3em;
    }

    .background{
        flex-direction: column;
    }
}
#d2:before {
    animation-delay: 1093ms;
}

#d3:before {
    animation-delay: 2186ms;
}

#d4:before {
    animation-delay: 3279ms;
}

#d5:before {
    animation-delay: 4372ms;
}
@keyframes light {
	0% {
		left: -50%;
	}
	100% {
		left: 1000%;
	}
}