body {
    background-image: url('https://previews.123rf.com/images/archerix/archerix1201/archerix120100088/12011298-hands-on-the-keyboard-abstract-computer-background-.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    height: 100vh;
  }

.content{
    margin-top: 10px;
    margin-bottom: 10px;
   
    background: rgb(34,193,195);
background: linear-gradient(0deg, rgba(34,193,195,1) 0%, rgba(253,187,45,1) 100%);
    padding: 20px;
    width: 100%;
}

#display{
    width: 100%;


}

#slider{
    width: 100%;
}

#length{
    display: inline-block;
    width: 100px;
}

.previous_passwords{
    margin-bottom: 20px;
    background: linear-gradient(0deg, rgba(34, 192, 195, 0.719) 0%, rgba(253, 187, 45, 0.712) 100%);
}
#lastNums {
    color: rgb(22, 6, 248);
    font-weight: 400;
    font-size: 26px;
}
.navbar-brand{
    text-align: center;
    padding-left: 500px;
}
/* For mobile phones: */
[class*="col-"] {
    width: 100%;
  }
  
  @media only screen and (min-width: 600px) {
    /* For tablets: */
    .col-s-1 {width: 8.33%;}
    .col-s-2 {width: 16.66%;}
    .col-s-3 {width: 25%;}
    .col-s-4 {width: 33.33%;}
    .col-s-5 {width: 41.66%;}
    .col-s-6 {width: 50%;}
    .col-s-7 {width: 58.33%;}
    .col-s-8 {width: 66.66%;}
    .col-s-9 {width: 75%;}
    .col-s-10 {width: 83.33%;}
    .col-s-11 {width: 91.66%;}
    .col-s-12 {width: 100%;}
  }
  
  @media only screen and (min-width: 768px) {
    /* For desktop: */
    .col-1 {width: 8.33%;}
    .col-2 {width: 16.66%;}
    .col-3 {width: 25%;}
    .col-4 {width: 33.33%;}
    .col-5 {width: 41.66%;}
    .col-6 {width: 50%;}
    .col-7 {width: 58.33%;}
    .col-8 {width: 66.66%;}
    .col-9 {width: 75%;}
    .col-10 {width: 83.33%;}
    .col-11 {width: 91.66%;}
    .col-12 {width: 100%;}
  }