1 html, body {2 height: 100%;3 }4 5 .vframe {6 border: solid blue 1px;7 height: 100%;8 text-align: center;9 }10 11 .vframe:before {12 content: "";13 width: 1px;14 height: 100%;15 display: inline-block;16 vertical-align: middle;17 }18 19 .vcenter {20 display: inline-block;21 border: solid red 1px;22 vertical-align: middle;23 }Enlace
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