.doctolib_btn {
display:block;
text-align:center;
background-color:#0596DE;
font-size:14px;
overflow:hidden;
width:250px;
padding: 7px;
position:fixed;
z-index:1000;
line-height:25px;
text-decoration:none;
}
.doctolib_btn,
.doctolib_btn:hover,
.doctolib_btn:active,
.doctolib_btn:focus,
.doctolib_btn:visited {
color:white;
text-decoration: none;
}
.doctolib_btn.doctolib_btn_position_left-top {
top:0;
left:5px;
border-bottom-right-radius:8px;
border-bottom-left-radius:8px;
}
.doctolib_btn.doctolib_btn_position_right-top {
top:0;
right:5px;
border-bottom-right-radius:8px;
border-bottom-left-radius:8px;
}
.doctolib_btn.doctolib_btn_position_left-bottom {
bottom:0;
left:5px;
border-top-right-radius:8px;
border-top-left-radius:8px;
}
.doctolib_btn.doctolib_btn_position_right-bottom {
bottom:0;
right:5px;
border-top-right-radius:8px;
border-top-left-radius:8px;
}
.doctolib_btn.doctolib_btn_position_large-bottom {
bottom:0;
left:0;
width:100%;
}
.doctolib_btn.doctolib_btn_position_large-top {
top:0;
left:0;
width:100%;
}
.doctolib_btn img {
height:20px;
margin-bottom:3px;
vertical-align:middle;
width:auto;
}
.doctolib_btn span {
font-size:16px; 
font-family:calibri;
}