* { box-sizing: border-box; }
html, 
body { 
    height: 100%; 
    width: 100%; 
    padding: 0px; 
    margin: 0px; 
    background: black; 
    color: white;
    font-family: sans-serif;
}
header {
    text-align: center;
    margin: 50px auto 25px;
}
.flex {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    flex-direction: column;
}     
.clip {
    clip-path: circle(50% at 50% 50%);
} 
/* COLOR COMBINATIONS:
*  #C7D3D4 & #603F83
*  #71CC98 & #525352
*/
.chevrons {
    margin: 25px auto;
    width:  400px;
    height: 400px;
    --chevron-color: #4298B5;
    background:
        linear-gradient( 45deg, var(--chevron-color) 25%, transparent 25%) 0px -200px, 
        linear-gradient(135deg, var(--chevron-color) 25%, transparent 25%) 0px -200px, 
        linear-gradient(225deg, var(--chevron-color) 25%, transparent 25%), 
        linear-gradient(-45deg, var(--chevron-color) 25%, transparent 25%);
    background-size: 400px 400px;
    background-color: #525352;            
    overflow: hidden;
    position: absolute;
    top: 0;
    transition: all 2s ease-in;
}
#chevron1 {
    z-index: 99;
}
#chevron2 {
    --chevron-color: #71CC98;
    background-color: #525352; 
    transition: all 2s ease-in;
}
.chevron-alt-color{
    opacity: 0;
}
.scroll-right {
    animation: scroll-right 5s linear infinite;
}
@keyframes scroll-right {
    100% {
        background-position-x: 400px;
    }
}