sysPass/app/modules/web/themes/material-blue/css/_noheader.scss

@mixin background-logo-outline() {
  background: transparent url($public-path + "/images/logo_full_nobg_outline.png") no-repeat top center;
  background-size: 75% auto;
}

body.login,
body.logout,
body.userpassreset {
  background: $color-bluegrey-fg;
  #wrap {
    background: transparent;
  }
  #container {
    padding-top: 5%;
  }
  footer {
    background: #78909C;
    a {
      color: #f2f2f2;
    }
  }
}

#box-pub-noheader {
  @include background-logo-outline;
  width: 40em;
  min-height: 20em;
  margin: 0 auto;
  > div {
    width: 100%;
    padding: 1em;
    margin: 0 auto;
  }
  .box-spacer {
    height: 15em;
    background-color: transparent;
  }
  .box-header {
    width: 100%;
    color: #f2f2f2;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    margin: 1em 0;
    letter-spacing: .1em;
    padding: 0.2em 0;
  }
  .box-form {
    @include shadow-full();
    background-color: #f2f2f2;
    form {
      fieldset#box-data {
        height: 100%;
        min-height: 14em;
        text-align: left;
        background-color: transparent;
        legend {
          width: 100%;
          color: $color-bluegrey-fg;
          font-size: 14px;
          font-weight: bold;
          text-align: center;
          margin: 1em 0;
          letter-spacing: .1em;
          padding: 0.2em 0;
        }
        .form-control > i {
          margin-right: .5em;
          opacity: .5;
        }
        .extra-hidden {
          display: none;
        }
        margin-bottom: 2em;
      }
    }
    div#box-buttons {
      margin-top: 2em;
      text-align: center;
    }
  }
}

@media screen and (max-width: 600px) {
  #box-pub-noheader {
    width: 25em;
    .box-spacer {
      height: 10em;
    }
    form {
      fieldset#box-data {
        .mdl-textfield {
          width: 100%;
        }
      }
    }
  }
}