#search-block-form {
   display: grid;
   grid-template-columns: 3fr 1fr;
   column-gap: 10px;
   width: 100%;
}

#search-block-form .form-item
{
   text-align: right;
}

#search-block-form .form-submit
{
   display: block;
   color: #fff;
   background-color: #d81e1e;
   border-radius: 30px;
   text-align: center;
   font-weight: bold;
   border: none;
   cursor: pointer;
   width: 110px;
   height: 35px;
   padding: 7px 0;
   font-size: 16px;
   line-height: 20px;
}

#search-block-form .form-submit:hover {
  background-color: #f54543;
}

#search-block-form input[type=search]
{
   display: inline-block;
   max-width: 309px;
   width: 100%;
   height: auto;
   border-radius: 5px;
}

@media (max-width: 600px)
{
   #search-block-form
   {
      text-align: center;
   }
}