#sam_0{
  height: 200px;
  width: auto;
  vertical-align: text-top;
}

#tab1{
  width: 700px;
  text-align: center;
}

.sin_tab{
  width: 50%;
  height: 200px;
  background-color: white;
  margin: 0 0 0 0;
  padding: 0 0 0 0;
}

button{
  margin: 0;
  padding: 0;
  background-color: white;
  text-align: left;
}

.no_ten li{
  list-style: none;
}