*{
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
}
body{
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: gray;
    gap: 25px;
}

.loading{
    width: 400px;
    height: 400px;
    border-radius: 50%;
    border-top: 20px solid red;
    border-bottom: 20px solid green;
    border-right: 20px solid yellow;
    border-left: 20px solid blue;
    animation: rodar 2s cubic-bezier(0, .25, .75, .1) infinite
}

@keyframes rodar {
    0% {
		transform: rotate(0);
	}
	100% {
		transform: rotate(360deg);
	}
}

@media (max-width:720px) {
    h1{
        font-size: 1rem;
    }
    .loading{
        width: 200px;
        height: 200px;
    }
}