<img url="water.gif" width="50">

<img url="water.gif" width="250" height="50">

<img class="wasser" url="water.gif">

.wasser {
    border-top-left-radius: 50%;
    rotate: -7deg
}
                

<img class="wasser" url="water.gif">

.wasser {
    width: 10vw;
}
                

<img class="wasser" url="water.gif">

.wasser {
    width: 20vw;
    height: 10vw;
}