Opacidad
“background-color: rgb(0,0,255); opacity: 0.5;”
opacity: 0.5;
Posición
1. http://www.jose-aguilar.com/blog/div-position/
2. http://bradsknutson.com/blog/css-quick-tip-center-div-horizontally-vertically/
margin: 40px 30px 45px 40px;
<img src="URL_imagen" /><div style="position: 20px ;left:valor; top:valor;">texto .......</
1. http://codepen.io/torbencolding/pen/rajRXW
2. http://vagabundia.blogspot.com/ontenedores-y-contenidos
3. Posicion texto, formularios, tablas...
Left aligned text.
Center aligned text.
Right aligned text.
Justified text.
No wrap text.
<p class="text-left">Left aligned text.</p>
<p class="text-center">Center aligned text.</p>
<p class="text-right">Right aligned text.</p>
<p class="text-justify">Justified text.</p>
<p class="text-nowrap">No wrap text.</p>
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