Image Thumbs
<style>
* { box-sizing: border-box; }
.imgthumb {
border: 12px solid #f3f3f3;
width: 100px;
height: 100px;
overflow: hidden;
}
img {max-width:100%}
</style>
<div class="imgthumb">
<img src="images/aaa2.jpg">
</div>

.imgthumb {
border-radius:50%;
border-left-color:#aed581;
border-bottom-color: #aed581;
}

.imgthumb {
border-radius:50%;
border-left-color:#aed581;
border-bottom-color: #aed581;
box-shadow: 0 0 8px rgba(0,0,0,0.4);
}

.imgthumb {
border-radius:5px;
border-color: #aed581;
}

.imgthumb {
border-radius:5px;
border-left-color:#aed581;
border-bottom-color: #aed581;
}

.imgthumb {
border-radius:70% 30% 30% 70%/60% 40% 60% 40%;
border-color: #aed581;
}

.imgthumb {
border-radius:70% 30% 30% 70%/60% 40% 60% 40%;
border-left-color:#aed581;
border-bottom-color: #aed581;
}

.imgthumb {
border-radius:50%;
border-color:#93ffdb black;
}

.imgthumb {
border-radius:70% 30% 30% 70%/60% 40% 60% 40%;
border-color:#f3f3f3 #aed581;
}

.imgthumb {
border-radius:5px;
border-color:#f3f3f3 #aed581;
}

.imgthumb {
border-radius:5px;
border-color: red black yellow #36ef36;
}

.imgthumb {
border-radius:50%;
border-color: red black yellow #36ef36;
}

.imgthumb {
border-radius:70% 30% 30% 70%/60% 40% 60% 40%;
border-color: red black yellow #36ef36;
}