.buttonpro {
  --btn-default-bg: black;
  --btn-padding: 15px 20px;
  --btn-hover-bg: green;
  --btn-transition: 0.3s;
  --btn-letter-spacing: 0.1rem;
  --btn-animation-duration: 1.2s;
  --btn-shadow-color: green;
  --btn-shadow: 0 2px 10px 0 var(--btn-shadow-color);
  --hover-btn-color: #7241ff;
  --default-btn-color: #fff;
  --font-size: 16px;
  --font-weight: 600;
  --font-family: Menlo, Roboto Mono, monospace;
  border-radius: 6em;
}

/* button settings 👆 */

.buttonpro {
  box-sizing: border-box;
  padding: var(--btn-padding);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--default-btn-color);
  font: var(--font-weight) var(--font-size) var(--font-family);
  background: var(--btn-default-bg);
  cursor: pointer;
  transition: var(--btn-transition);
  overflow: hidden;
  box-shadow: var(--btn-shadow);
  border-radius: 6em;
  border: 2px solid #2a2b3a;
}

.buttonpro span {
  letter-spacing: var(--btn-letter-spacing);
  transition: var(--btn-transition);
  box-sizing: border-box;
  position: relative;
  background: inherit;
}

.buttonpro span::before {
  box-sizing: border-box;
  position: absolute;
  content: "";
  background: inherit;
}
.buttonpro:focus {
  scale: 1.09;
}
.buttonpro:hover,
.buttonpro:focus {
  background: var(--btn-default-bg);
  box-shadow: 0px 0px 10px 0px rgba(119, 68, 255, 0.7);
  border: 2px solid rgb(9, 255, 0);
}

.buttonpro:hover span,
.buttonpro:focus span {
  color: rgb(9, 255, 0);
}

.buttonpro:hover span::before,
.buttonpro:focus span::before {
  animation: chitchat linear both var(--btn-animation-duration);
}

@keyframes chitchat {
  0% {
    content: "#";
  }

  5% {
    content: ".";
  }

  10% {
    content: "^{";
  }

  15% {
    content: "-!";
  }

  20% {
    content: "#$_";
  }

  25% {
    content: "№:0";
  }

  30% {
    content: "#{+.";}35%{content: "@}-?";
  }

  40% {
    content: "?{4@%";
  }

  45% {
    content: "=.,^!";
  }

  50% {
    content: "?2@%";
  }

  55% {
    content: "\;1}]";
  }

  60% {
    content: "?{%:%";
    right: 0;
  }

  65% {
    content: "|{f[4";
    right: 0;
  }

  70% {
    content: "{4%0%";
    right: 0;
  }

  75% {
    content: "'1_0<";
    right: 0;
  }

  80% {
    content: "{0%";
    right: 0;
  }

  85% {
    content: "]>'";
    right: 0;
  }

  90% {
    content: "4";
    right: 0;
  }

  95% {
    content: "2";
    right: 0;
  }

  100% {
    content: "";
    right: 0;
  }
}