*{
    padding: 0;
    margin: 0;
    /* box-sizing: border-box; */
}
body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: rgb(36, 37, 37);
}
.main{
    position: relative;
    width: 60px;
    height: 280px;
    background: rgb(63, 253, 38);
    border-radius: 40px;
    border: 4px solid rgb(18, 126, 4);
    box-shadow: 8px 7px 10px #1f1f1f,
    7px 8px 5px #1a1a1a,
    0 0 10px #0e0d0d;
}
.main ul{
    list-style: none;
    position: relative;
    
}
.main ul li{
    display: flex;
    gap: 40px;
    position: relative;
    align-items: center;
    width: 50px;
    height: 50px;
    /* background: red; */
    border-radius: 50%;
    margin: 5px;
    transition: 0.5s;
}
.main ul li:hover{
    background: #fff;
    box-shadow: inset -5px -5px 10px rgba(0, 0, 0, 0.5),
    5px 5px 10px rgba(0, 0, 0, 0.5),
    -4px -4px 5px rgba(255, 255, 255,0.3);
}
.main ul li:hover .content{
    opacity: 1;
    transition-delay: 0.2s;
}
.main ul li .icon{
    position: relative;
    left: 50%;
    transform: translate(-50%);
    width: 100%;
    height: 100%;
    /* background: blue; */
    display: flex;
    justify-content: center;
    align-items: center;

}
.main ul li .icon i{
    font-size: 1.7em;
    color: rgba(26, 32, 32, 0.986);
}
.main ul li .content{
    position: relative;
    font-family: Arial, Helvetica, sans-serif;
    background: #fff;
    padding: 5px;
    border-radius: 8px;
    opacity: 0;
    transition: 0.5s;
    box-shadow: inset -2px -3px 5px rgba(0, 0, 0, 0.4);
}
.main ul li .content::before{
    content: '';
    position: absolute;
    top: 7px;
    z-index: -1;
    left:-5px;
    width: 15px;
    height: 15px;
    background: #fff;
    transform: rotate(45deg);
}