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cssoverlaycss-positionfixed

How to vertically center a dynamic height fixed element?

I'm making an overlay window thing and I'm trying to vertically center the message in the center of the screen.... this is my CSS thus far:

#overlay {
    position: fixed;
    right: 0;
    left: 0;
    width: 276px;
    margin: 0px auto;
    padding: 12px 16px;
    font-size: 14px;
    color: #6d748b;
    background-color: #fff;
    border: 2px solid #b9c1d6;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
    border-radius: 5px;      
    z-index: 7500;
}
Solution

  • This is one way (assuming you're only trying to center one element):

    #overlay {
    top: 50%;
   -ms-transform: translateY(-50%);
   -webkit-transform: translateY(-50%);
   -moz-transform: translateY(-50%);
   -o-transform: tranlslateY(-50%);
    transform: translateY(-50%);
}

    Updated fiddle