how to click event in css

Question

This works:

.rightone ul {
    list-style: none;
    padding: 0px;
    margin: 0px;
}
.rightone ul li {
    display: block;
    position: relative;
    float:right;
}
.rightone li ul {
    display: none;
}
.rightone ul li a {
    display: block;
    padding: 5px 30px 5px 30px;
    text-decoration: none;
    white-space: nowrap;

}
.rightone ul li li {
    background-color: black;
    border-radius:5px;
    padding: 2%;
}
.rightone ul li a:hover {
    color:#0ef2c4;
}
.rightone li:active ul {
    display: block; 
    text-align: left;
    position: absolute;
}
.rightone li:hover li {
    float: none;
}
.rightone li:hover a {
    color:#0ef2c4;
}
.rightone li:hover li a:hover {
    color:white;
}
.arrow-down {
    width: 0; 
    height: 0; 
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #0ef2c4;
    cursor: pointer;
}

But it work only when i hold... but i need, if i single click show that pop-up again click that arrow it will hide..

My output

I want to move that pop up left side also..

I want like this

https://jsfiddle.net/z4fej7gm/ But i dont know how apply to my project

Please anyone help me.. Thanks in advance

Answer 1

Css doesn't support click events