Про аватарки.

Размер. .avatar img { width:100px; height:auto;}

.avatar img { width:80px; height:auto;}

.avatar img { width:50px; height:auto;}

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Форма.
.avatar img { border-radius:20px;-webkit-border-radius:20px;-moz-border-radius:20px;-khtml-border-radius:20px; -o-border-radius:20px!important; }	.avatar img { border-radius:60px;-webkit-border-radius:60px;-moz-border-radius:60px;-khtml-border-radius:60px; -o-border-radius:60px!important; }	.avatar img { border-bottom-right-radius: 30px!important; border-top-left-radius: 30px!important; }
Обводка.
.avatar img { border:2px dotted #81735C !important;}	.avatar img { border:2px dashed #81735C !important;}	.avatar img { border:2px solid #81735C !important;}	.avatar img { border:4px double #81735C !important;}
.avatar img { border:4px groove #81735C !important;}	.avatar img { border:4px ridge #81735C !important;}	.avatar img { border:4px inset #81735C !important;}	.avatar img { border:4px outset #81735C !important;}