.fireworks{
    position: absolute;

}

.explosion{
    position: absolute;
    left: -2px;
    bottom: 0;
    width: 4px;
    height: 80px;
    transform-origin: 50% 100%;
    overflow: hidden;
}

.explosion:nth-child(1) {
    transform: rotate(0deg) translateY(-15px);

}

.explosion:nth-child(2) {
    transform: rotate(30deg) translateY(-15px);

}

.explosion:nth-child(3) {
    transform: rotate(60deg) translateY(-15px);

}

.explosion:nth-child(4) {
    transform: rotate(90deg) translateY(-15px);

}

.explosion:nth-child(5) {
    transform: rotate(120deg) translateY(-15px);

}

.explosion:nth-child(6) {
    transform: rotate(150deg) translateY(-15px);

}

.explosion:nth-child(7) {
    transform: rotate(180deg) translateY(-15px);

}

.explosion:nth-child(8) {
    transform: rotate(210deg) translateY(-15px);

}

.explosion:nth-child(9) {
    transform: rotate(240deg) translateY(-15px);

}

.explosion:nth-child(10) {
    transform: rotate(270deg) translateY(-15px);

}

.explosion:nth-child(11) {
    transform: rotate(300deg) translateY(-15px);

}

.explosion:nth-child(12) {
    transform: rotate(330deg) translateY(-15px);

}

.explosion::before{
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    height: 40px;
    background-color: #f5cf52;
    animation: explosion 2s ease-in-out infinite;
}

@keyframes explosion {
    0% {
        top: 100%;
    }
    33%, 100% {
        top: -50%;
    }
}

#firework1{
    left: 60%;
    top: 30%;
    transform: scale(1);
}
#firework1 .explosion::before {
    animation: explosion 2s 1s ease-in-out infinite;
}

#firework2{
    left: 30%;
    top: 25%;
    transform: scale(.8);
}
#firework2 .explosion::before {
    animation: explosion 2s 1.3s ease-in-out infinite;
}

#firework3{
    left: 45%;
    top: 45%;
    transform: scale(.6);
}
#firework3 .explosion::before {
    animation: explosion 2s .7s ease-in-out infinite;
}

#firework4{
    left: 35%;
    top: 4%;
    transform: scale(.5);
}
#firework4 .explosion::before {
    animation: explosion 2s .5s ease-in-out infinite;
}

#firework5{
    left: 65%;
    top: 10%;
    transform: scale(.5);
}
#firework5 .explosion::before {
    animation: explosion 2s .7s ease-in-out infinite;
}

#firework6{
    left: 80%;
    top: 52%;
    transform: scale(1.2);
}
#firework6 .explosion::before {
    animation: explosion 2s .5s ease-in-out infinite;
}

#firework7{
    left: 20%;
    top: 68%;
    transform: scale(.6);
}
#firework7 .explosion::before {
    animation: explosion 2s .8s ease-in-out infinite;
}