CSS3 - transition

.more a{
font-family: 'Racing Sans One';
color: gray;
padding: 5px;
border-radius: 5px;
-moz-border-radius:5px;
-webkit-border-radius:5px;
font-size: 14px;
background: rgb(210,255,82); /* Old browsers */
background: -moz-linear-gradient(top,  rgba(210,255,82,1) 0%, rgba(145,232,66,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(210,255,82,1)), color-stop(100%,rgba(145,232,66,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top,  rgba(210,255,82,1) 0%,rgba(145,232,66,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top,  rgba(210,255,82,1) 0%,rgba(145,232,66,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top,  rgba(210,255,82,1) 0%,rgba(145,232,66,1) 100%); /* IE10+ */
background: linear-gradient(to bottom,  rgba(210,255,82,1) 0%,rgba(145,232,66,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#d2ff52', endColorstr='#91e842',GradientType=0 ); /* IE6-9 */
transition:all 2s;
-moz-transition:all 2s; /* Firefox 4 */
-webkit-transition:all 2s; /* Safari and Chrome */
-o-transition:all 2s; /* Opera */
}
.more a:hover, .more a:active{
color: black;
background: rgb(135,224,253); /* Old browsers */
background: -moz-linear-gradient(top,  rgba(135,224,253,1) 0%, rgba(83,203,241,1) 40%, rgba(5,171,224,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(135,224,253,1)), color-stop(40%,rgba(83,203,241,1)), color-stop(100%,rgba(5,171,224,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top,  rgba(135,224,253,1) 0%,rgba(83,203,241,1) 40%,rgba(5,171,224,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top,  rgba(135,224,253,1) 0%,rgba(83,203,241,1) 40%,rgba(5,171,224,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top,  rgba(135,224,253,1) 0%,rgba(83,203,241,1) 40%,rgba(5,171,224,1) 100%); /* IE10+ */
background: linear-gradient(to bottom,  rgba(135,224,253,1) 0%,rgba(83,203,241,1) 40%,rgba(5,171,224,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#87e0fd', endColorstr='#05abe0',GradientType=0 ); /* IE6-9 */
}