<span class="clock-block">
<span class="clock-val">42</span>
<span class="clock-unit">minutes</span>
</span>
<span class="clock-block">
<span class="clock-val">08</span>
<span class="clock-unit">seconds</span>
</span>
<strong>CSS</strong>

html, body {
min-height: 100%;
}

body {
font: 12px/20px 'Lucida Grande', Verdana, sans-serif;
color: #404040;
background: #eee;
background-image: -webkit-radial-gradient(circle cover, #edf0f0, #d7d9da 80%);
background-image: -moz-radial-gradient(circle cover, #edf0f0, #d7d9da 80%);
background-image: -o-radial-gradient(circle cover, #edf0f0, #d7d9da 80%);
background-image: radial-gradient(circle cover, #edf0f0, #d7d9da 80%);
}

.clock {
margin: 60px auto;
text-align: center;
cursor: default;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}

.clock-block {
display: inline-block;
vertical-align: top;
position: relative;
width: 100px;
height: 98px;
margin: 0 8px;
padding-top: 16px;
line-height: 1;
font-family: Helvetica, Arial, sans-serif;
text-align: center;
text-shadow: 0 1px rgba(255, 255, 255, 0.3);
background: #e5e7eb;
border: 1px solid #9fa2ad;
border-radius: 3px 3px 2px 2px;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
background-image: -webkit-linear-gradient(top, #f1f2f5, #e5e7eb 20%, #c2c5d1 50%, #e5e7eb 80%, #e4e5eb);
background-image: -moz-linear-gradient(top, #f1f2f5, #e5e7eb 20%, #c2c5d1 50%, #e5e7eb 80%, #e4e5eb);
background-image: -o-linear-gradient(top, #f1f2f5, #e5e7eb 20%, #c2c5d1 50%, #e5e7eb 80%, #e4e5eb);
background-image: linear-gradient(to bottom, #f1f2f5, #e5e7eb 20%, #c2c5d1 50%, #e5e7eb 80%, #e4e5eb);
-webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.1);
box-shadow: inset 0 1px rgba(255, 255, 255, 0.5), 0 1px 2px rgba(0, 0, 0, 0.1);
}
.clock-block:before, .clock-block:after {
content: '';
position: absolute;
bottom: -4px;
left: -1px;
right: -1px;
z-index: -1;
height: 4px;
background: #cacfd9;
border: 1px solid #9fa2ad;
border-radius: 2px;
-webkit-box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4), 0 1px 2px rgba(0, 0, 0, 0.1);
box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4), 0 1px 2px rgba(0, 0, 0, 0.1);
}
.clock-block:before {
bottom: -7px;
}

.clock-val {
display: block;
position: relative;
z-index: 1;
font-size: 64px;
font-weight: bold;
color: #4f5258;
}
.clock-val:before, .clock-val:after {
content: '';
position: absolute;
left: 0;
right: 0;
}
.clock-val:before {
z-index: -1;
top: -16px;
bottom: 50%;
border-radius: 2px 2px 0 0;
-webkit-box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}
.clock-val:after {
top: 50%;
bottom: -16px;
border-top: 1px solid rgba(60, 62, 68, 0.4);
border-radius: 0 0 2px 2px;
background-image: -webkit-linear-gradient(top, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0) 50%);
background-image: -moz-linear-gradient(top, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0) 50%);
background-image: -o-linear-gradient(top, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0) 50%);
background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0) 50%);
-webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.2);
box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.clock-unit {
display: block;
margin-top: -2px;
font-size: 13px;
font-weight: 200;
color: #6b707a;
text-transform: capitalize;
}
.clock-unit:after {
content: '';
position: absolute;
z-index: -2;
top: 100%;
left: -1px;
right: -1px;
height: 30px;
margin-top: 6px;
border-radius: 0 0 3px 3px;
background-image: -webkit-linear-gradient(top, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0));
background-image: -moz-linear-gradient(top, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0));
background-image: -o-linear-gradient(top, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0));
background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0));
}