app/static/css/general.css

.block{
    margin-bottom: 20px;
    padding: 20px;
    background-color: #e9ecef;
    border-radius: 5px;
}

.container {
    width: 95%;
    max-width: 1200px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
button , .button {
  display: inline-block;
  padding: 10px 20px;
  margin: 10px;
  font-size: 16px;
  cursor: pointer;
  text-decoration: none;
  color: white;
  background-color: #4CAF50;
  border: none;
  border-radius: 5px;
}
button:hover , .button:hover {
  background-color: #45a049;
}
button#alert , #alert.button,.button-alert {
  background-color: #f44336;
}
button#alert:hover , #alert.button:hover , .button-alert:hover {
  background-color: #da190b;
}
button:disabled, .button:disabled {
  background-color: #a9ada9;
  cursor: not-allowed;
}
button:disabled:hover, .button:disabled:hover {
  background-color: #a9ada9;
}

h2 {
    margin-top: 0;
}
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
  }
  
  .switch input { 
    opacity: 0;
    width: 0;
    height: 0;
  }
  
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
  }
  
  .slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
  }
  
  input:checked + .slider {
    background-color: #4CAF50;
  }
  
  input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
  }
  
  input:checked + .slider:before {
    transform: translateX(26px);
  }
#first.block {
    background-color: #2195f300;
    display: flex;
    margin-bottom: 20px;
    padding: 0px;
}

#first.block h2 {
  margin-bottom: 0px;
  margin-right: 10px;
}
.horizontal-form {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
}
select,
input[type="text"],
input[type="number"],
input[type="password"]
{
    padding: 10px 20px;
    margin: 10px;
    font-size: 16px;
}