* {
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: #262626;
  width: 100%;
  height: 100vh;
}

.caixa {
  height: 60%;
  width: 35%;
  background-color: #940c0c;
 
  position: absolute;
  left: 33%;
  top: 20%;
  display: grid;
  grid-template-columns: 5fr;
  grid-template-rows: 250px;

}

input {
  border: 0px;
  border-bottom: solid 1px
}

input:focus {
  border: solid 1px limegreen;
  outline: none
}

input:hover {
  border: solid 1px red
}

#send{
    background-color: rgb(83, 6, 6) ;
    color: white;
    border-radius: 5%;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 5vh;
    width: 5%;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    text-decoration: none;
    position: absolute;
    top: 81%;
    left: 48%;
}

.f{
  font-size: 50px;
  color: aliceblue;
  padding-left: 215px;
  padding-top: 100px;
}