width: 300px;
height: 300px;
background:
linear-gradient(60deg, rgba(36,255,207,1) 0%, 50%, rgba(255,255,255,0) 50%) 146px 67px / 100px 170px no-repeat no-repeat, /* Right Side */
linear-gradient(-60deg, rgba(36,255,207,1) 0%, 50%, rgba(255,255,255,0) 50%) 47px 67px / 100px 170px no-repeat no-repeat; /* Left Side */