body{
  height: 1900px;
  direction: rtl;
}
a{
  text-decoration: none;
  margin-right: 18px;
}
.all_site{
  width: 1100px;
   margin: 0 auto;
}
img{width: 500px;height: 400px;}
#box{
height: 520px;
}
div.box{
  width: 250px;height: 420px;
  background-color:#C2C4C6;
  float: left;
  margin: 10px;
  margin-top: 40px;
  
}
.box>.img{
  width: 250px;height: 350px;
}
.box>button{
  width: 250px;
  height: 70px;
}
.box1{
background-color:#343A40;
width: 1110px;
height: 120px;
overflow: hidden;
opacity: 0.3;
color: aliceblue;
font-size: 21px;
text-align: right;

}
.footer{
  height: 50px;
  line-height: 50px;
  bottom: 0;
  width: 100%;
  position: fixed;
}