*, *:before, *:after {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
  
  body {
    /* background: linear-gradient(to right, blue 0%, green 100%); */
    font-size: 12px;
    background: rgba(0, 0, 255, 0.04);
    
  }
  
  body, button, input {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    letter-spacing: 1.4px;
  }
  
  .background {
    display: flex;
    min-height: 100vh;
  }
  
  .container {
    flex: 0 1 700px;
    margin: auto;
    padding: 10px;
  }
  
  .screen {
    position: relative;
    background: #8484c0;
    border-radius: 15px;
  }
  
  .screen:after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    bottom: 0;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, .4);
    z-index: -1;
  }
  
  .screen-header {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    background: #0505ae;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
  }
  
  .screen-header-left {
    margin-right: auto;
  }
  
  .screen-header-button {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 3px;
    border-radius: 8px;
    background: blue;
  }
  
  .screen-header-button.close {
    background: green;
  }
  
  .screen-header-button.maximize {
    background: green;
  }
  
  .screen-header-button.minimize {
    background: blue;
  }
  
  .screen-header-right {
    display: flex;
  }
  
  .screen-header-ellipsis {
    width: 3px;
    height: 3px;
    margin-left: 2px;
    border-radius: 8px;
    background: #999;
  }
  
  .screen-body {
    display: flex;
  }
  
  .screen-body-item {
    flex: 1;
    padding: 50px;
  }
  
  .screen-body-item.left {
    display: flex;
    flex-direction: column;
  }
  
  .app-title {
    display: flex;
    flex-direction: column;
    position: relative;
    color: blue;
    font-size: 26px;
  }
  
  .app-title:after {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 25px;
    height: 4px;
    background: #1d1dea;
  }
  
  .app-contact {
    margin-top: auto;
    font-size: 0.8rem;
    color: white;
  }
  
  .app-form-group {
    margin-bottom: 15px;
  }
  
  .app-form-group.message {
    margin-top: 40px;
  }
  
  .app-form-group.buttons {
    margin-bottom: 0;
    text-align: right;
  }
  
  .app-form-control {
    width: 100%;
    padding: 10px 0;
    background: none;
    border: none;
    border-bottom: 1px solid #666;
    color: #ddd;
    font-size: 14px;
    text-transform: uppercase;
    outline: none;
    transition: border-color .2s;
  }
  
  .app-form-control::placeholder {
    color: #666;
  }
  
  .app-form-control:focus {
    border-bottom-color: #ddd;
  }
  
  .app-form-button {
    background: none;
    border: none;
    color: blue;
    font-size: 14px;
    cursor: pointer;
    outline: none;
  }
  
  .app-form-button:hover {
    color: white;
  }
  
  .credits {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    color: #ffa4bd;
    font-family: 'Roboto Condensed', sans-serif;
    font-size: 16px;
    font-weight: normal;
  }
  
  .credits-link {
    display: flex;
    align-items: center;
    color: #fff;
    font-weight: bold;
    text-decoration: none;
  }
  
  .dribbble {
    width: 20px;
    height: 20px;
    margin: 0 5px;
  }
  
  @media screen and (max-width: 520px) {
    .screen-body {
      flex-direction: column;
    }
  
    .screen-body-item.left {
      margin-bottom: 30px;
    }
  
    .app-title {
      flex-direction: row;
    }
  
    .app-title span {
      margin-right: 12px;
    }
  
    .app-title:after {
      display: none;
    }
  }
  
  @media screen and (max-width: 600px) {
    .screen-body {
      padding: 40px;
    }
  
    .screen-body-item {
      padding: 0;
    }
  }
  
  /* responsive part */
  @import url('https://fonts.googleapis.com/css2?family=Nunito:wght@200;300;400;600;700;800&display=swap');

*,
*:before,
*:after {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  margin: 0;
}

.wk-desk-1 {
  width: 8.333333%;
}

.wk-desk-2 {
  width: 16.666667%;
}

.wk-desk-3 {
  width: 25%;
}

.wk-desk-4 {
  width: 33.333333%;
}

.wk-desk-5 {
  width: 41.666667%;
}

.wk-desk-6 {
  width: 50%;
}

.wk-desk-7 {
  width: 58.333333%;
}

.wk-desk-8 {
  width: 66.666667%;
}

.wk-desk-9 {
  width: 75%;
}

.wk-desk-10 {
  width: 83.333333%;
}

.wk-desk-11 {
  width: 91.666667%;
}

.wk-desk-12 {
  width: 100%;
}

@media (max-width: 1024px) {
  .wk-ipadp-1 {
    width: 8.333333%;
  }

  .wk-ipadp-2 {
    width: 16.666667%;
  }

  .wk-ipadp-3 {
    width: 25%;
  }

  .wk-ipadp-4 {
    width: 33.333333%;
  }

  .wk-ipadp-5 {
    width: 41.666667%;
  }

  .wk-ipadp-6 {
    width: 50%;
  }

  .wk-ipadp-7 {
    width: 58.333333%;
  }

  .wk-ipadp-8 {
    width: 66.666667%;
  }

  .wk-ipadp-9 {
    width: 75%;
  }

  .wk-ipadp-10 {
    width: 83.333333%;
  }

  .wk-ipadp-11 {
    width: 91.666667%;
  }

  .wk-ipadp-12 {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .wk-tab-1 {
    width: 8.333333%;
  }

  .wk-tab-2 {
    width: 16.666667%;
  }

  .wk-tab-3 {
    width: 25%;
  }

  .wk-tab-4 {
    width: 33.333333%;
  }

  .wk-tab-5 {
    width: 41.666667%;
  }

  .wk-tab-6 {
    width: 50%;
  }

  .wk-tab-7 {
    width: 58.333333%;
  }

  .wk-tab-8 {
    width: 66.666667%;
  }

  .wk-tab-9 {
    width: 75%;
  }

  .wk-tab-10 {
    width: 83.333333%;
  }

  .wk-tab-11 {
    width: 91.666667%;
  }

  .wk-tab-12 {
    width: 100%;
  }
}

@media (max-width: 500px) {
  .wk-mobile-1 {
    width: 8.333333%;
  }

  .wk-mobile-2 {
    width: 16.666667%;
  }

  .wk-mobile-3 {
    width: 25%;
  }

  .wk-mobile-4 {
    width: 33.333333%;
  }

  .wk-mobile-5 {
    width: 41.666667%;
  }

  .wk-mobile-6 {
    width: 50%;
  }

  .wk-mobile-7 {
    width: 58.333333%;
  }

  .wk-mobile-8 {
    width: 66.666667%;
  }

  .wk-mobile-9 {
    width: 75%;
  }

  .wk-mobile-10 {
    width: 83.333333%;
  }

  .wk-mobile-11 {
    width: 91.666667%;
  }

  .wk-mobile-12 {
    width: 100%;
  }
}