body {
    margin:  20px;
    background: hsl(70, 31%, 85%);
    text-align:  center;
}

.balloon {
    display: inline-block;
    width: 120px;
    height: 145px;
    background: hsl(215,50%,65%);
    border-radius: 80%;
    position: relative;
    box-shadow: inset -10px -10px 0 rgba(0,0,0,0.07);
    margin: 20px 30px;
    transition: transform 0.5s ease;
    z-index: 10;
    animation:balloons 4s ease-in-out infinite;
    transform-origin:bottom center;
}

@keyframes balloons {
    0%,100%{ transform: translateY(0) rotate(-4deg); }
    50%{ transform: translateY(-25px) rotate(4deg); }
}

.balloon:before {
    content: "▲";
    font-size: 20px;
    color: hsl(215,30%,50%);
    display:block;
    text-align: center;
    width: 100%;
    position: absolute;
    bottom: -12px;
    z-index: -100;
}

.balloon:after {
    display: inline-block; top: 153px;
    position: absolute;
    height: 250px;
    width: 1px;
    margin: 0 auto;
    content: "";
    background: rgba(255,255,255,0.2);
}

.balloonColor1 {
    background: hsl(215,50%,65%);
    animation-duration: 5s;
}
.balloonColor1:before {
    color: hsl(215,30%,50%);
}

.balloonColor2 {
    background: hsl(245,40%,65%);
    animation-duration: 3.5s;
}
.balloonColor2:before {
    color: hsl(245,40%,65%);
}

.balloonColor3 {
    background: hsl(139,50%,60%);
    animation-duration: 3s;
}
.balloonColor3:before {
    color: hsl(139,30%,50%);
}

.balloonColor4 {
    background: hsl(59,50%,58%);
    animation-duration: 4.5s;
}
.balloonColor4:before {
    color: hsl(59,30%,52%);
}

.balloonColor5 {
    background: hsl(23,55%,57%);
    animation-duration: 5s;
}
.balloonColor5:before {
    color: hsl(23,44%,46%);
}


/*
.balloon: nth-child(2){ background: hsl(245,40%,65%); animation-duration: 3.5s; }
.balloon: nth-child(2):before { color: hsl(245,40%,65%);  }

.balloon: nth-child(3){ background: hsl(139,50%,60%); animation-duration: 3s; }
.balloon: nth-child(3):before { color: hsl(139,30%,50%);  }

.balloon: nth-child(4){ background: hsl(59,50%,58%); animation-duration: 4.5s; }
.balloon: nth-child(4):before { color: hsl(59,30%,52%);  }

.balloon: nth-child(5){ background: hsl(23,55%,57%); animation-duration: 5s; }
.balloon: nth-child(5):before { color: hsl(23,44%,46%);  }
*/