.redcolor, .red { color: red; }

.size50{  width:50px; } 
.size100{ width:100px; } 
.size150{ width:150px; } 
.size200{ width:200px; } 
.size250{ width:250px; } 
.size300{ width:300px; } 
.size400{ width:400px; }
.size450{ width:450px; }
.size500{ width:500px; }
.size600{ width:600px; }

.fl, .float-l{ float: left; }

.fr, .float-r{ float: right; }

.yellow{  color: black; background: yellow; }