* {margin: 0;padding: 0;}

body {
   background: rgba(51, 51, 51, 0.07)  url(images/fon_demo.png);
}

.main__works {
  width: 100%;
  margin: 0 auto;
  text-align: center;
}
h1 {
  font: 52px Helvetica, Arial, Sans-Serif;
  line-height: 100px;
  letter-spacing: 3px;
  text-align: center;
  color: #999;
  text-shadow:-1px -1px #666, 1px 1px #666;
  margin-bottom: 20px;
}

h2 {
   font: 28px Tahoma, Helvetica, Arial, Sans-Serif;
   line-height: 60px;
   text-align: center;
   color: #222;
   text-shadow: 0px 2px 3px #555;
}

.demo{box-shadow: inset 0 0 0 1px #63ad0d;
    display: inline-block;
    font: bold 14px Arial, Helvetica, Clean, sans-serif;
    margin: 0 25px 25px 0;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    border-radius:5px;
    background: #99b6df;
    background-image: linear-gradient(#99b6df, #638ec8);
    border: solid 1px #6d94ce;
    border-bottom: solid 3px #3867ac;
    box-shadow: inset 0 0 0 1px #bbcfeb;
    color: #fff;
    text-shadow: 0 1px 0 #3c61ab; }

.demo:hover,
.activ{
    background: #638ec8;
    background-image: linear-gradient(#638ec8, #99b6df);
    border: solid 1px #6d94ce;
    border-bottom: solid 3px #3867ac;
    box-shadow:  0 0 0 1px #bbcfeb;
    color: #f4f4f4;
    text-shadow: 1px 1px 3px #222
}

@media(max-width: 720px) {
  h1 {
    font-size: 44px;
    line-height: 70px;
  }
  h2 {
    font-size: 24px;
  }
}

@media(max-width: 380px) {
  h1 {
    font-size: 38px;
    line-height: 50px;
  }

}