/* first create a div element in your html file with "class="nike" " attribute
*/
.nike {
position: absolute;
overflow: hidden;
width: 50vmin;
aspect-ratio: 14/5;
position: relative;
}
.nike:before {
content: '';
position: absolute;
background: black;
width: 37%;
height: 550%;
bottom: -134%;
left: 70.5%;
border-top-left-radius: 48% 17%;
border-top-right-radius: 120% 40%;
transform: rotate(-113deg);
z-index: 1;
}
.nike:after {
content: '';
position: absolute;
background: white;
width: 30%;
height: 400%;
bottom: -73%;
left: 64%;
border-top-left-radius: 64% 14%;
border-top-right-radius: 125% 46%;
transform: rotate(-105deg);
z-index: 2;
}