body{
	background-color: #333333ff;
	font-family: "Segoe UI";
}

.center {
  margin: 0 0 30px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.button_b {
margin: 0 200 100px;
color: #fff !important;
text-transform: uppercase;
text-decoration: none;
background: #474747;
padding: 7px;
border-radius: 2px;
display: inline-block;
border: none;
font-size: 10;
font-weight: 600;
transition: all 0.4s ease 0s;
}
.button_b:hover {
background: #016554;
letter-spacing: 1px;
-webkit-box-shadow: 0px 5px 40px -10px rgba(0,0,0,0.57);
-moz-box-shadow: 0px 5px 40px -10px rgba(0,0,0,0.57);
box-shadow: 5px 40px -10px rgba(0,0,0,0.57);
transition: all 0.4s ease 0s;
}