boxstyle.css

.chat_box{
	position:fixed;
	right:20px;
	bottom:0px;
	width:250px;
}
.chat_body{
	background:white;
	padding:5px 0px;
}

.chat_head,.msg_head{
	background:#1abc9c;
	color:white;
	padding:15px;
	font-weight:bold;
	cursor:pointer;
	border-radius:2px 2px 0px 0px;
	border-bottom: 5px solid #16a085;
}

.msg_box{
	position:fixed;
	bottom:-5px;
	width:250px;
	background:white;
	border-radius:5px 5px 0px 0px;
}

.msg_head{
	background:#3498db;
}

.msg_body{
	background:white;
	height:200px;
	font-size:12px;
	padding:15px;
	overflow:auto;
	overflow-x: hidden;
}
.msg_input{
	width:100%;
	border: 1px solid white;
	border-top:1px solid #DDDDDD;
	-webkit-box-sizing: border-box; /* Safari/Chrome, other WebKit */
	-moz-box-sizing: border-box;    /* Firefox, other Gecko */
	box-sizing: border-box;  
}

.close{
	float:right;
	cursor:pointer;
}
.minimize{
	float:right;
	cursor:pointer;
	padding-right:5px;
	
}

.user{
	position:relative;
	padding:10px 10px;
	transition: 0.3s;
}
.user:hover{
	background:#1abc9c;
	cursor:pointer;
	transition: 0.3s;
}

.msg_a{
	position:relative;
	background:#FDE4CE;
	padding:10px;
	min-height:10px;
	margin-bottom:5px;
	margin-right:10px;
	border-radius:5px;
}
.msg_a:before{
	content:"";
	position:absolute;
	width:0px;
	height:0px;
	border: 10px solid;
	border-color: transparent #FDE4CE transparent transparent;
	left:-20px;
	top:7px;
}


.msg_b{
	background:#EEF2E7;
	padding:10px;
	min-height:15px;
	margin-bottom:5px;
	position:relative;
	margin-left:10px;
	border-radius:5px;
	word-wrap: break-word;
}
.msg_b:after{
	content:"";
	position:absolute;
	width:0px;
	height:0px;
	border: 10px solid;
	border-color: transparent transparent transparent #EEF2E7;
	right:-20px;
	top:7px;
}