* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: 'Trebuchet MS';
  font-size: 1.08rem;
}

h1 {
  text-align: center;
  font-size: 2rem;
  margin: 30px auto;
}

.ready {
  font-size: 300%;
  max-width: 90%;
}
body {
    background-repeat: no-repeat;    
  background-size: cover;           
  min-height: 100vh;              
  margin: 0;                     
  background: linear-gradient(30deg, red, silver);
}
form {
  margin: 0 auto;
  border: none;
  width: 400px;
  max-width: 90%;
  padding: 1rem;
  
}
fieldset {
  
  border: 4px solid #353839;
  padding: 1rem;
  border-radius: 1rem;
}
legend {
  clip-path: inset(50%);
  height: 1px;
  width: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}
label {
  display: flex;
  flex-direction: column;
  font-weight: bold;
}

input {
  padding: 0.45rem;
  display: block;
  width: 100%;
  margin: 8px 0;
}

#submit {
  display: block;
  margin: 20px auto 0px auto;
  padding: 8px;
  border-radius: 0.4rem;
  cursor: pointer;
}
#submit:hover {
  background: #ecffeb;
}

input:focus {
  background: #ecffeb;
}