styles.css

/*
=============== 
Logo fonts
===============
*/
@import url('https://fonts.googleapis.com/  css2?family=Courgette&display=swap');
/*
=============== 
Variables
===============
*/

:root {
  /* dark shades of primary color*/
  --clr-primary-1: hsl(22, 28%, 21%);
  --clr-primary-2: hsl(22, 28%, 29%);
  --clr-primary-3: hsl(22, 28%, 37%);
  --clr-primary-4: hsl(22, 28%, 45%);
  /* primary/main color */
  --clr-primary-5: hsl(22, 31%, 52%);
  /* lighter shades of primary color */
  --clr-primary-6: hsl(22, 31%, 60%);
  --clr-primary-7: hsl(22, 31%, 67%);
  --clr-primary-8: hsl(20, 31%, 74%);
  --clr-primary-9: hsl(22, 31%, 81%);
  --clr-primary-10: hsl(22, 31%, 88%);
  /* darkest grey - used for headings */
  --clr-grey-1: hsl(209, 61%, 16%);
  --clr-grey-2: hsl(211, 39%, 23%);
  --clr-grey-3: hsl(209, 34%, 30%);
  --clr-grey-4: hsl(209, 28%, 39%);
  /* grey used for paragraphs */
  --clr-grey-5: hsl(210, 22%, 49%);
  --clr-grey-6: hsl(209, 23%, 60%);
  --clr-grey-7: hsl(211, 27%, 70%);
  --clr-grey-8: hsl(210, 31%, 80%);
  --clr-grey-9: hsl(212, 33%, 89%);
  --clr-grey-10: hsl(210, 36%, 96%);
  --clr-white: #fff;
  --clr-red-dark: hsl(360, 67%, 44%);
  --clr-red-light: hsl(360, 71%, 66%);
  --clr-green-dark: hsl(125, 67%, 44%);
  --clr-green-light: hsl(125, 71%, 66%);
  --clr-black: #222;
  --transition: all 0.3s linear;
  --spacing: 0.1rem;
  --radius: 0.25rem;
  --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  --max-width: 1170px;
  --fixed-width: 620px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background: var(--clr-white);
  color: var(--clr-grey-1);
  line-height: 1.5;
  font-size: 0.875rem;
}

h1 {
  font-size: 2.5rem;
}

.header {
  height: 5rem;
  width: 90vw;
  margin: 0 auto;
  max-width: var(--max-width);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: 'Courgette';
  color: var(--clr-primary-1);
}

.section-1 {
  background-color: var(--clr-primary-1);
}

.form_control {
  display: grid;
  grid-template-columns: 400px 400px;
  column-gap: 30px;
  margin-bottom: 1.25rem;
  padding: 1rem;
}

.search_input {
  padding: 0.5rem;
  background: var(--clr-grey-10);
  border-radius: var(--radius);
  border-color: var(--clr-grey-5);
  letter-spacing: var(--spacing);
  margin-right: 10px;
}

.btn {
  text-transform: uppercase;
  background: var(--clr-primary-5);
  color: var(--clr-primary-10);
  padding: 0.375rem 0.75rem;
  letter-spacing: var(--spacing);
  display: inline-block;
  font-weight: 400;
  transition: var(--transition);
  font-size: 0.875rem;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  border-radius: var(--radius);
  border-color: transparent;
}
.btn:hover {
  color: var(--clr-primary-1);
  background: var(--clr-primary-7);
}

.field {
  margin-top: 1.25rem;
  background-color: var(--clr-grey-8);
  padding: 1rem;
}

.message {
  height: 20px;
  padding: 5px 20px;
  color: red;
}

.node {
  width: 40px;
  height: 40px;
  box-sizing: border-box;
  border-radius: 50%;
  background-color: black;
  padding-top: 0.55rem;
  padding-left: 0.65rem;
  color: var(--clr-white);
  font-size: 1rem;
  z-index: 10;
}

.row {
  height: 5rem;
  display: flex;
  justify-content: space-around;
}

.root {
  justify-content: center;
}

canvas {
  position: absolute;
}