body {
width: 100%;
height: 100vh;
margin: 0px;
background: #76bdd5;
}
@keyframes slide {
from {
left: 0%;
}
to {
left: calc(100% - 70px);
}
}
.bubble {
top: 60px;
height: 70px;
width: 70px;
position: absolute;
border-radius: 50%;
border: 2px solid rgba(173, 216, 230, 0.5);
background: rgba(173, 216, 230, 0.4); /* For browsers that do not support gradients */
background: -webkit-linear-gradient(rgba(173, 216, 230, 0.8), rgba(173, 216, 230, 0.1)); /* For Safari 5.1 to 6.0 */
background: -o-linear-gradient(rgba(173, 216, 230, 0.8), rgba(173, 216, 230, 0.1)); /* For Opera 11.1 to 12.0 */
background: -moz-linear-gradient(rgba(173, 216, 230, 0.8), rgba(173, 216, 230, 0.1)); /* For Firefox 3.6 to 15 */
background: linear-gradient(rgba(173, 216, 230, 0.8), rgba(173, 216, 230, 0.1)); /* Standard syntax */
animation-name: slide;
animation-duration: 4s;
animation-iteration-count: infinite;
animation-direction: alternate;
box-sizing: border-box;
opacity: 0.8;
}
.bright {
top: 70px;
margin-left: 16px;
height: 0px;
width: 0px;
position: absolute;
border-radius: 50%;
background-color: white;
box-shadow: 10px 10px 10px 10px white;
animation-name: slide;
animation-duration: 4s;
animation-iteration-count: infinite;
animation-direction: alternate;
opacity: 0.8
}
.container {
position: relative;
width: 100%;
height: 100%;
margin: 0px;
}
<div class=container>
<div class=bubble></div><div class=bright></div>
</div>
wenn Sie corrdonates verwenden, müssen Sie auch eine Position setzen: relativ/absolut oder fixiert. –