@media screen and (min-width: 320px) {

div.containerTransition{height: 13px;position: absolute;top: 0px;left: 0px; width: 100%;overflow: hidden;}
div.containerTransition div.transition{content: "";left: 50%;transform: translateX(-50%);width: 85%;height: 71px;border-radius: 125px / 12px;box-shadow: 0 0 20px #565656;display: block;top: -72px;position: absolute;z-index: 0;}

}

@media screen and (min-width: 480px) {

div.containerTransition{}
div.containerTransition div.transition{}

}

@media screen and (min-width: 768px) {

div.containerTransition{}
div.containerTransition div.transition{}

}

@media screen and (min-width: 991px) {

div.containerTransition{}
div.containerTransition div.transition{}

}