body {
    display: block;
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
    background: #eee;
    margin: 0;
    padding: 0;
}

.main {
    display: flex;
    align-items: center;
    width: 100vw;
    height: 100vh;
    justify-content: center;
}

.infi_1 {
    background: #ffff01;
    box-sizing: border-box;
    width: 200px;
    height: 200px;
    border-radius: 50% 50% 0 50%;
    border: 30px solid #91eb91;
    transform: rotate(-45deg);
    box-shadow: 1px 2px 2px 2px #0000001c, inset -3px 3px 0px -1px #0000001a;
}

.infi_2 {
    background: #ffff01;
    width: 200px;
    height: 200px;
    border-radius: 50% 50% 0 50%;
    border: 30px solid #91eb91;
    transform: rotate(135deg);
    margin: 0 0 0 40px;
    box-sizing: border-box;
    box-shadow: -3px -3px 1px -2px #0000001c, inset -2px 3px 0px 0px #0000001c;
}