.tests_block .p_parent{width:260px;height:203px;position:relative;}
.tests_block .parent{width:100%;height:100%;position:absolute;top:0;left:0;white-space:nowrap;}
.tests_block .parent:before{height:100%;display:inline-block;vertical-align:middle;content:'';}
.tests_block .block{display:inline-block;white-space:normal;vertical-align:middle;text-align:left;}