.box-body{
    height: auto;
}

.text-container:hover .text-box {
    max-height: 250px;
	min-height: 250px;
	transition: max-height .5s, min-height .5s;
}

.text-container:first-child:hover {
    max-height: 300px;
	min-height: 300px;
	transition: max-height .5s, min-height .5s;
}