/* Basic reset */

/* Finally adding some IE9 fallbacks for gradients to finish things up */

/* A nice BG gradient */


/* Using box shadows to create 3D effects */
#calculator {
    width: 505px;
    height: auto;
    margin: 10px auto;
    padding: 20px 20px 9px;
    background: #9dd2ea;
    background: linear-gradient(#9dd2ea, #8bceec);
    border-radius: 3px;
    box-shadow: 0px 4px #009de4, 0px 10px 15px rgba(0, 0, 0, 0.2);
}
/* Top portion */
.top span.clear {
    float: left;
}

/* Inset shadow on the screen to create indent */
.top .screen {
    height: 60px;
    width: 285px;
    float: right;
    padding: 0 10px;
    background: rgba(0, 0, 0, 0.2);
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#0000000,endColorstr=#0000000);
    border-radius: 3px;
    box-shadow: inset 0px 4px rgba(0, 0, 0, 0.2);
    /* Typography */
    font-size: 27px;
    line-height: 40px;
    color: white;
    /*text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);*/
    text-align: right;
    letter-spacing: 1px;
}

/* Clear floats */
.keys, .top {overflow: hidden;}

/* Applying same to the keys */
.keys span, .top span.clear {
    float: left;
    position: relative;
    top: 0;
    cursor: pointer;
    width: 110px;
    height: 56px;
    background: white;
    border-radius: 3px;
    box-shadow: 0px 4px rgba(0, 0, 0, 0.2);
    margin: 0 7px 11px 0;
    font-size: 27px;
    color: #888;
    line-height: 56px;
    text-align: center;

    /* prevent selection of text inside keys */
    user-select: none;

    /* Smoothing out hover and active states using css3 transitions */
    transition: all 0.2s ease;
}
.top span.clear{
    width: 80px;
}
/* Remove right margins from operator keys */
/* style different type of keys (operators/evaluate/clear) differently */
.keys span.operator {
    background: #FFF0F5;
    margin-right: 0;
}

.keys span.eval {
    background: #f1ff92;
    box-shadow: 0px 4px #9da853;
    color: #888e5f;
}

.top span.clear {
    background: #ff9fa8;
    box-shadow: 0px 4px #ff7c87;
    color: white;
}
.top span.x {
    background: #118009;
    box-shadow: 0px 4px #10690d;
    color: white;
}
/* Some hover effects */
.keys span:hover {
    background: #9c89f6;
    box-shadow: 0px 4px #6b54d3;
    color: white;
}

.keys span.eval:hover {
    background: #abb850;
    box-shadow: 0px 4px #717a33;
    color: #ffffff;
}

.top span.clear:hover {
    background: #f68991;
    box-shadow: 0px 4px #d3545d;
    color: white;
}

/* Simulating "pressed" effect on active state of the keys by removing the box-shadow and moving the keys down a bit */
.keys span:active {
    box-shadow: 0px 0px #6b54d3;
    top: 4px;
}

.keys span.eval:active {
    box-shadow: 0px 0px #717a33;
    top: 4px;
}

.top span.clear:active {
    top: 4px;
    box-shadow: 0px 0px #d3545d;
}