body{
    
    background: rgb(241, 241, 241);
    color: rgb(48, 46, 46);
    
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1.1rem;
    
}
h1{
    font-size: 1.7rem;
    margin: 10px 50px;
}
h2{
       color: green;
       margin: 0px;
}
h3{
    color: red;
}
h4{
    margin: 0px;
}
span{
    color: red;
    margin: 0px;
}
p{
    margin: 0px;
}
input, select, option{
    border-radius: 5px;
    margin: 5px;
    background: rgb(255, 255, 255);
    color: rgb(0, 0, 0);
}
img{
    width: 150px;
    
}
.head{
    display: flex;
    align-items: center;
    margin: 20px;
}
.add, .rem{
    font-size: 1.1rem;
}
#ref {
    height: 50px;
    font-weight: bold;
    font-size: 1.5rem;
}
#TTamount {
    height: 50px;
    font-weight: bold;
    font-size: 1.5rem;
    color: green;
}

label[for=ref], label[for=TTamount]{
font-weight: bold;
font-size: 1.5rem;
}

input:invalid{
    background-color: rgba(255, 0, 0, 0.05);
  }

  input[type=submit] {
    background-color: #04AA6D;
   
    color: white;
    padding: 16px 32px;
    text-decoration: none;
    font-weight: bold;
    font-size: 2rem;
    margin: 4px 2px;
    cursor: pointer;
}