style1.css

html,body,h1,h2,h3,h4 {font-family:"Lato", sans-serif}
.header {
  padding: 10px; /* some padding */
  text-align: center; /* center the text */
  background: #0a0b3d; /* green background */
  color: white; /* white text color */
}

/* Increase the font size of the <h1> element */
.header h1 {
  font-size: 40px;
}

.d-flex button {
  margin: 1.5em 0.5em;
  padding: 0.3em 1.4em;
}

.d-flex table {
  margin: 1em 10em;
}

table .btnedit {
  color: lightsalmon;
  cursor: pointer;
}

.success {
  background-color: lightgreen;
  padding: 1em;
}

.error {
  background-color: tomato;
  padding: 1em;
}

/* Ensure proper sizing */
* {
  box-sizing: border-box;
}

/* Column container */
.row {
  display: flex;
  flex-wrap: wrap;
}

/* Create two unequal columns that sits next to each other */
/* Sidebar/left column */
.side {
  flex: 20%; /* Set the width of the sidebar */
  background-color: #f1f1f1; /* Grey background color */
  padding: 20px; /* Some padding */
}

/* Main column */
.main {
  flex: 80%; /* Set the width of the main content */
  background-color: #cae1ff; /* Light steel blue 1 background color */
  padding: 20px; /* Some padding */
}
.navigationbar .active {
  background-color: #ddd; /* Grey background color */
  color: black; /* Black text color */
}

.navigationbar {
  overflow: hidden; /* Hide overflow */
  background-color: #313131; /* Dark background color */
}

/* Style the navigation bar links */
.navigationbar a {
  float: left; /* Make sure that the links stay side-by-side */
  display: block; /* Change the display to block, for responsive reasons (see below) */
  color: white; /* White text color */
  text-align: center; /* Center the text */
  padding: 14px 20px; /* Add some padding */
  text-decoration: none; /* Remove underline */
}

/* Right-aligned link */
.navigationbar a.right {
  float: right; /* Float a link to the right */
}

/* Change color on hover/mouse-over */
.navigationbar a:hover {
  background-color: #ddd; /* Grey background color */
  color: black; /* Black text color */
}

.column {
  float: left;
  width: 33.33%;
  padding: 15px;
  background-color: #2b4f81;
  color: white;
  word-wrap: break-word;
}

.feature {
  width: 50%;
}

.feature a {
  color: white;
}

.feature a:hover {
  color: #d9ad1e;
}

.copyright {
  padding: 10px;
  background-color: #0a0b3d;
  font-size: 16px;
  text-align: center;
  color: white;
}

.responsive {
  max-width: 100%;
  height: auto;
}