<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Tutori Dashboard (Dark)</title>

&lt;style&gt;
  :root{
    --bg0:#05070F;
    --bg1:#070A12;
    --panel:#0F1A2D;
    --panel2:#0B1324;
    --stroke:rgba(255,255,255,.10);
    --soft:rgba(255,255,255,.06);

    --text:#EAF0FF;
    --muted:rgba(234,240,255,.72);

    --blue:#3B82F6;
    --mint:#22C55E;
    --cyan:#2DD4BF;
    --gold:#FBBF24;
    --orange:#FB923C;
    --pink:#FB7185;
    --purple:#A78BFA;

    --shadow:0 18px 44px rgba(0,0,0,.58);
    --shadow2:0 10px 24px rgba(0,0,0,.42);

    --r14:14px;
    --r18:18px;
    --r22:22px;
    --r28:28px;
  }

  *{ box-sizing:border-box; }
  body{
    margin:0;
    background: transparent;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
    color:var(--text);
    -webkit-font-smoothing: antialiased;
    text-rendering: geometricPrecision;
  }

  /* Center inside ANY embed container width */
  .wrap{
    width:100%;
    display:flex;
    justify-content:center;
    padding: 26px 18px 30px;
  }

header .phone,
.top-right,
.phone-number {
  display: none !important;
}

a[href^="tel"] {
  display: none !important;
}

/* hide phone number in header */
header a[href^="tel"],
header .phone,
header .contact-phone,
header .top-phone {
  display: none !important;
  visibility: hidden !important;
}

.phone-header,
.nav-function.phone-header {
    display: none !important;
    visibility: hidden !important;
} 

/* Mission Buttons */
.btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:12px;

  padding:14px 20px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(59,130,246,.22);
  color:var(--text);

  font-weight:1000;
  text-transform:uppercase;
  letter-spacing:.6px;
  font-size:12px;

  margin-top:14px;
  box-shadow:0 10px 18px rgba(0,0,0,.25);
  cursor:default;
  user-select:none;
  position:relative;
  overflow:hidden;
  transition:all .18s ease;
}

.btn.alt{
  background:rgba(34,197,94,.22);
}

.btn:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 24px rgba(0,0,0,.35);
}

/* checkbox square */
.btn .check{
  width:18px;
  height:18px;
  border-radius:6px;
  border:2px solid rgba(255,255,255,.35);
  background:rgba(0,0,0,.15);
  flex:0 0 18px;
}

/* center the text while keeping checkbox left */
.btn span:last-child{
  flex:1;
  text-align:center;
}
/* Force perfect alignment inside the card */
.card .btn{
  width:100%;
  margin:14px 0 0 0;
}
<div class="subscribe-box">
  <input type="email" placeholder="Email Address">
  <button>GO</button>
</div>

&lt;style&gt;
.subscribe-box{
  display:flex;
  gap:10px;
  align-items:center;
  margin-top:15px;
}

.subscribe-box input{
  flex:1;
  padding:14px 18px;
  border-radius:30px;
  border:none;
  outline:none;
  background:#e5e5e5;
  color:#333;
  font-size:14px;
}

&lt;style&gt;
.subscribe-box{
  display:flex !important;
  gap:10px;
  align-items:center;
  margin-top:15px;
}

.subscribe-box input{
  flex:1 !important;
  padding:14px 18px !important;
  border-radius:30px !important;
  border:none !important;
  outline:none !important;
  background:#e5e5e5 !important;
  color:#333 !important;
}

.subscribe-box button{
  width:auto !important;
  padding:14px 24px !important;
  border-radius:30px !important;
  border:none !important;
  background:#2F4463 !important;
  color:white !important;
  font-weight:600 !important;
}